Improvement in commutators for electro-magnetic machines



V. BARJON.

improvement in Commutators for Electra-Magnetic Machines.

No. 129,085. Patented luly16,1872.

UNITED STATES PATENT OFFICE.

VICTOR BARJON, OF NEW YORK, N. Y.

Specification forming part of Letters Patent No. 129,085, dated July 16, 1872.

To all whom it may concern:

Be it known that I, VICTOR BARJON, of the city, county, and State of New York, have invented a new and Improved Oomrnutator for Electro-Magnetic Machines; and I do hereby declare the following to be a full, clear, and exact descripton thereof, which will enable those skilled in the art to make and use the same, reference being had to the accompanyin g drawing forming part of this specification, in which drawing Figure 1 represents a plan or top view of this invention. Fig. 2 is a transverse section of the same.

Similar letters indicate corresponding parts.

This invention consists in the arrangement of a ring of copper or other good conductor of electricity, from one edge of which extends a series of V-shaped projections or spurs, the spaces between which are occupied by filling pieces of wood or other bad conductor of electricity, in combination with three commutatorsprings, one of which connects with the positive pole of a battery and is in contact with the continuous part of the copper ring, while the two others connect with the negative pole of the battery and bear on that part of the commutator which is composed of V-shaped spurs and the intermediate filling pieces in such a manner that, by moving these last-named negative springs toward or from the points of the V-shaped spurs, the power and speed of the motor can be increased or diminished at pleasure.

In the drawing, the letter A designates a ring of copper or other good conductor, which is mounted upon a drum, B, of wood or other isolating material. From one edge of said ring A project a series of V-shaped spurs, O, and the spaces between these spurs are occupied by filling pieces D of wood or other bad conductor of electricity, so that a continuous smooth and cylindrical surface is produced, equal in diameter to that of the continuous part of the ring A. With this commutator I use three springs,

E F F, the spring E being connected to the positive pole of a battery and brought to bear on the continuous part of the ring-A, while the springs F F connect to the negative pole of the battery and bear upon that portion of the commutator which is formed by the spurs O and the intermediate filling pieces D.

When the commutator begins to rotate the negative springs F F alternately come in contact each with one of the conductin g-spurs and then with one of the non-conducting filling pieces, and thereby the circuit is alternately closed and broken, and the desired object of the commutator is obtained. Both the springs F F are connected to the negative pole of the battery, and they serve only to insure a metallic connection, they both touching the metal (J O or the wood D D at the same time, and act the same as one spring; but should one of them fail to produce the metallic connection the other will also.

The peculiarity of my commutator, however, consists in the shape of the spurs G, whereby I am enabled to regulate the speed and the power or" the motor by moving the negative springs F F toward or from the points of said spurs.

Vifhat I claim as new, and desire to secure by Letters Patent, is-

1. A commutator for an electromagnetic engine, composed of a conducting-ring, A, with V-shaped spurs O, the spaces between which are occupied by non-conducting filling pieces D, substantially as shown and described.

2. The combination, with a commutator constructed as described, of a positive spring, E, bearing on therin gA, and two negative springs, F F, bearing on the spurs G and filling pieces D, substantially as and for the purpose set forth.

V. BARJON.

Witnesses Fnnens PENISTON, W. Hanrr. 

